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#1560675 10/13/2024 7:10 PM
Joined: Dec 2019
Posts: 439
3
'Bolter
'Bolter
3 Offline
Joined: Dec 2019
Posts: 439
Converted to 12v and halogen reflectors using relays wired like the first picture. It all made sense. Could not wrap my head around how the horn relay would work as it works though the switch (horn button) as a ground. I found the second picture on Google but with no explanation of circuitry. Wanted to check if this is what I’m looking for the horn before smoking something. Wire coming out of the steering column is the “switch” that is called “trigger” connects to #85 and #86 is hot instead of being a ground?
Attachments
IMG_0003.gif (19.13 KB, 53 downloads)
Headlight relay
IMG_1333.png (242.7 KB, 53 downloads)
Horn relay?


Larry
Old man᠁Old truck᠁neither one goes very fast. All you need in life is TIME, PATIENCE and MONEY.
If you are missing one component, you'll need an abundance of the others two.
37 GC #1560680 10/13/2024 7:39 PM
Joined: Jan 2019
Posts: 2,242
Herder of Cats, Goats, and Sheep (moderator)
Herder of Cats, Goats, and Sheep (moderator)
Joined: Jan 2019
Posts: 2,242
Yes, that horn relay wiring is correct.

The relay will only trigger if it has both power and ground.

For the headlights, the ground is always connected and you are switching the power.

For the horn, the power is always connected and you are switching the ground.


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37 GC #1560684 10/13/2024 8:05 PM
Joined: Dec 2019
Posts: 439
3
'Bolter
'Bolter
3 Offline
Joined: Dec 2019
Posts: 439
Thanks, making sure rather than make sparks.


Larry
Old man᠁Old truck᠁neither one goes very fast. All you need in life is TIME, PATIENCE and MONEY.
If you are missing one component, you'll need an abundance of the others two.

Moderated by  Jon G, Rusty Rod 

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